Introduction
This manual provides essential instructions for the safe and effective use of your Kircuit AC Adapter, model KAC-300P. This power supply is designed for compatibility with specific Casio WK-series piano keyboards, including the WK-3000, WK-3200, WK-3300, and WK-8000 models. Please read this manual thoroughly before use and retain it for future reference.
Important Safety Information
- Use only with compatible devices as specified.
- Do not expose the adapter to water or excessive moisture.
- Avoid dropping or subjecting the adapter to strong impacts.
- Do not attempt to disassemble or modify the adapter.
- Ensure the power outlet voltage matches the adapter's input specifications (100V-240V AC).
- Unplug the adapter during lightning storms or when unused for extended periods.
- Keep out of reach of children.
Setup Instructions
- Verify Compatibility: Confirm that your Casio keyboard model (WK-3000, WK-3200, WK-3300, or WK-8000) is listed as compatible with this Kircuit AC Adapter.
- Inspect the Adapter: Before connecting, visually inspect the AC adapter and its cable for any signs of damage, such as frayed wires or bent pins. Do not use if damaged.
- Connect to Keyboard: Locate the DC input jack on your Casio piano keyboard. Carefully insert the adapter's DC output plug into this jack. Ensure a secure connection.
- Connect to Power Outlet: Plug the AC adapter into a standard wall power outlet (100V-240V AC).
- Power On: Once connected, you can power on your Casio keyboard.

Image: The Kircuit AC Adapter with its power cord. This image shows the main unit and the coiled cable, ready for connection.

Image: The Kircuit AC Adapter plugged into a power strip. This demonstrates how the adapter connects to a standard electrical outlet.
Operating Instructions
The Kircuit AC Adapter functions as a direct power source for your compatible Casio keyboard. Once properly connected, it provides continuous power, eliminating the need for batteries.
- Ensure the adapter is firmly plugged into both the keyboard and the wall outlet.
- The adapter is designed for indoor use only.
- If the keyboard does not power on, check all connections and ensure the power outlet is functional.
Care and Maintenance
- Cleaning: Disconnect the adapter from the power source and the keyboard before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or solvents.
- Storage: When not in use, store the adapter in a cool, dry place, away from direct sunlight and extreme temperatures. Avoid tightly coiling the cable to prevent damage.
- Cable Care: Do not bend, twist, or pull the cable excessively. Avoid placing heavy objects on the cable.

Image: Illustration of durable cable construction. This image highlights the quality materials used in the power cable for enhanced durability and resistance to wear.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Keyboard does not power on. |
|
|
| Adapter feels warm during use. | Normal operation. | A slight warmth is normal. If the adapter becomes excessively hot or emits smoke/odor, immediately unplug it and discontinue use. |
Specifications
- Model: KAC-300P
- Input: 100V-240V AC, 50/60Hz, 0.3A
- Output Current: 2 Amps
- Cable Length: Approximately 6.5 ft (2 meters)
- Safety Features: Built-in Dynamic IC, Charger IC, Power fuse for rapid charging and overcharge protection. Short circuit protection, excess voltage protection, over temperature protection, overcurrent protection.
- Compatibility: Casio WK-3000, WK-3200, WK-3300, WK-8000 Piano Keyboards

Image: Two Kircuit AC Adapters shown side-by-side. This view highlights the compact design of the adapter.

Image: Diagram illustrating the built-in safety protections of the Kircuit AC Adapter. This graphic details features such as short circuit, excess voltage, over temperature, and overcurrent protection.
Warranty and Support
For information regarding warranty coverage or technical support, please refer to the contact information provided by your retailer or the Kircuit brand's official channels. Keep your purchase receipt as proof of purchase.